KHURMI R S & GUPTA, . (1987). A TEXT BOOK OF MACHINE DESIGN. : S CHAND & CO.
KHURMI R S & GUPTA, . 1987. A TEXT BOOK OF MACHINE DESIGN. : S CHAND & CO.
KHURMI R S & GUPTA, . A TEXT BOOK OF MACHINE DESIGN. : S CHAND & CO. 1987.